moauley



3 Sheets-Sheet, 1.

(No Model.)

R. G. MOAULEY. FORCE FEED LUBRIGATOR.

,682. Patented Aug. 15, 1882.

Ill/l (No Model.) 3 Sheets-Sheet 2. R. G. MGAULEY.

FORGE FEED LUBRIGATOR.

120.262.682. FM- Patented 21155.15, 1882.

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R. G. MGAULEY.

FORGE FEED LUBRIGATOR.

No. 262,682. Patented Aug. 15, 41882.

J. @ma M 10mg@ UNITED STATES ATENT F F ICE@ ROBERT G. MCAULEY, OFDETROIT, MICH., ASSIGNOR OF THREE-FOURTHS TO LOUIS B. FULTON, THOMAS J.MCTIGHE, AND FRANCIS A. POLLOOK,

ALL OF PITTSBURG, PA.

FORCE-FEED LUBRICATOR.

SPECIFICATION forming part of Letters Patent No. 262,682, dated August15, 1882.

Application filed June 2Q, 1882. (No model.)

To all 'whom it may concern:

Be it known that I, ROBERT G. McAULnY, of Detroit, in the county ot'Wayne and State of Michigan, have invented certain new and usefulImprovements in Force-Feed Lubricators; and I do hereby declare that thefollowing is a full, clear, and exact description of the 'inventiomwhich will enable others skilled in thel art to which it appertains tomake and use 1o the same, reference being had to the accompanyin gdrawings,which form a part of this specitication, in which- Figure l isa vertical section of my lubricator for stationary engines. Fig. 2 is aplan of I5 the gong-cam. Fig. 8 is an enlarged detail of the groovedshaft and feather. Fig. 4 is a vertical section of the lubricator asadapted for locomotives. Fig. 5 is a plan section of Fig. 4. Fig. 6 is adetail.

This invention relates to the construction of that class of devicesknown as force-feed lubricators, which are adapted to inject thevlubricant into the working parts of engines against the steam or otherpressure existing z 5 therein.

It consists in the combination, with acylinder communicating at bothends with the steampipe, and containing oil on one side of a pistontherein, said piston being thus in equilibrium,

3o of an auxiliary steam-cylinder, also communicatingwith the steam-pipeat one end and having a piston connected to the other piston, whereby apreponderance is obtained for the steam and the oil is expelled.

The invention further consists in the combination and arrangement ofparts, as hereinafter fully described and claimed.

In the drawings, A designates a cylinder containing a piston, B,suitably packed. The 4o cap C is separate to facilitate constructionand' repairs, audis attached by screws or otherwise. A removable plug,D, in cap C allows the cylinder A above the piston B to be lled withoil. An arm, E, is attached laterally at or near the bottom ot' cylinderA, serving for attachment 'to and communication with the dry-pipe oraconnection thereto or main steampipe. Arm E has two passages, ab,passage a being provided with the stop-valve c, and leading to port d atthe bottom ot' cylinder A, and passage b connecting with a pipe, e,pro-v vided with a stop-valve,]", which leads to the top of cylinder A,as shown. At a suitable point in pipe e, preferably at cap C, I place acheck-valve, g, tending to close with the pressure of steam from thesteam-pipe; butImake valve g adjustable by providing it with the head orcollar i, which is grasped loosely between the forks lc of a screw-stem,l, so that by operating the stem l the valve g maybe forcibly liftedfrom its seat to any desired extent. Below the cylinder A, but axiallyin line therewith, I attach to it a small auxiliary cylinder, M, of thesame length as cylinder A, and provide it with the piston N. Thepistonrod I? passes up through the bottom of cylinder A, and is attachedto the piston B therein, a stufing-box, m, being provided to preventleakage. The lower end of cylinder M communicates by 'a pipe, n, withthe passage a. of arm, E, the valve c being arranged to shut off steamfrom both cylinders at the same time. Au opening, p', at upper end ofcylinder M allows the air to escape during the upward stroke of pistonP, and to enter during its 75 downward stroke.

At starting the two pistons B and N will bo at the downward limit oftheir stroke, and cylinder A will be full of oil and all valves closed.I then open valve f, admitting steam-pressure to check-Valve g. Then Iopen the valve c, admitting steam below both pistons B N. The admissionot' steam under piston B would not moveit, since the same steam-pressurewould be exerted against the top of piston B through the medium of thecontained oil and the valve g,- but the steam also enters under pistonN, and, as piston B is in a state of equilibrium, the pressure under Ncauses it to rise, and with it the piston B, to which it is connected.This ejects the oil at check-valve g, and the oil passes over into pipee to passage b, whence it passes into the main steam-pipe on its way tothe steam-chest or other locality. The amount of oil passing over intopipe e is governed by the amount of openin g given the check-valveg,

which is controlled by the screw-stem l, and thus a very unif'orm andreliable feed of oil is effected.

To refill the cylinder A with oil I first shut od' steam at the valve c,then open thedraincock o at the lowest point in pipe n, which allows anysteam or water in the two cylinders undertheirpistonsto escape, andprevents cushioningin their desired downward movement. I

then open the valve g by means of the stem l, thus admitting the livesteam above the piston B, and, there being no counteracting pressureofstcam below, thepistons are forced down, after which plug D is removedand the cylinder A lled with oil, and the plug restored. Then on closingthe drain-cock o and opening the valve c the operations of feeding areagain inaugurated. As the pipes and passages are all in metal, it isdesirable to by some means indicate the rate of feed to the engineer.This I do by means as follows The piston-rod P is made tubular, andreceives a rod or shaft, It, which projects upwardly through the cap C,and is packed therein by the packing device p. ShaftIt has aspiralgroove, q, cut inits surface, into which apin, r, or feather projects.Pin ris attached to a sleeve on top of piston B, or is set in the upperend of the hollow piston-rod. The shaft It, by means of a suitableshoulder or collal1 at the cap C, is prevented from upward movement. Theresult of this construction is that when the piston B rises it revolvesthe shaft R slowly. Above cap C the shaft R is provided withagear-wheel, s, -which meshes with a pinion, t, the shaft u of whichis'suitably stepped in cap C, so that the slow rotation of shaft Bproduces acomparatively rapid rotation of shaft u. The wheels .s t areprotected by a casing, n. On the upper end of the rotating shaft It, Iix a gong, T, and on the casing e, I pivot or otherwise arrange aspring-hammer, fw. A cam, x, on shaft u rotates with the latter, andintermittently pushes .out the hammer lw and releases it. Every time thehammer is released it strikes the gong, thereby announcing the fact tothe attendant that the feed is in operation, and indicating the rate offeed by the number of taps given in a certain period of time. The amountof oil in the cup is indicated at any time by the pointerz, standing atthe periphery of the gong T, around which a scale is marked. As theshaft It makes but one revolution during the stroke of piston B, thelevel of oil can be easily read off the scale on gong T.

For locomotives I construct as follows: I make the twin cylinders Al A'with a central opening, a', in the neck, which unites them, and acored-out passage, b', at the bottom, so that when steam is admitted tosaid passage it has access at once to both pistons B' in the cylinders.A pipe, c', leads from the drypipe of the engine to the passage b', andis provided with the stop-valve d. Each of the pistons B' has apiston-rod, C', passing through the cap D' and suitably packed. Bothpiston-rods are attached to a cross-head, E', to which also is attachedcentrally the piston-rod F', which carries the piston G' in theauxiliary cylinder H' below, the rod F' passing loosely up throughopening a',as shown. The three pistons B' B' G lare thus connected andmove together. Passage b' communicates by the pipe e' with the bottom ofcylinder H', and has the drain-cock f', as before. Check-valves g g' areprovided at the top of the cylinders A', where the connection is made tothe oilpipes h' h', which lead to the respective steamchests on thesides of the engine. These valves g' maybe ordinary check-valves, asthey will not be required to be forced open to drive down the pistons B'for refilling with oil, as the pistons B' can here be pushed down byhand.

The operations are as before. By this construction, however, the oneauxiliary piston, G', preponderates over the equilibrium established intwo independent cylinders, A' A', and causes the two pipes l1.' h to beindependently supplied with oil. The rate of feed and level of oil inthis case is indicated by the position and rate of movement of the rod For rods C'.

In going down grade it is frequently the practice to shut o' steam fromthe engine-cylinders, this being done at the throttle-valve. Thedry-pipe contains no live steam, and consequentl yin that event no feedot'oil takes place;

but a feedis desirable, as the pistons and valves are moving and requirelubrication. To effect such I connect as shown, at Fig. 6, where c2 isthe connection from the dry-pipe to the lubricator. I connect the pipe calso to the steamdome or other live-steam space of the boiler by'meansof a pipe, 7c', and provide this pipe with a stop-valve, l', which,while the engine is using steam, I keep closed. In pipe c', I place aglobe check-valve, m', so that when the throttle-valveis closed,in orderto allow theengine to roll by gravity, the tendency to vacuum in thedry-pipe will close thc valve m' outwardl y; or the latter will beclosed by the opening of the valve l'. I then open the valve Z', andthus admit steam directly from the boiler, after which the feed isforced, as before, notwithstanding the air-pressure which may then existin the steam-chests and the pipes h'.

I have shown in Fig. l the oil-cylinder and the auxiliary cylinderaxially arranged with a piston-rod common to both pistons; but Fig. 4shows that the axial arrangementis not an essential feature. In fact,the compounding of the cylinders may be much varied. Their positions maybe reversed and the two pistonrods required in such case connected by asort of walking-beam or lever.

I claim as my inventionl. In a lubricator having an oil-cylinder and amovable piston subject to like steam-pressure on both sides thereof, thecombination therewith of an auxiliary steam-cylinder having a pistonconnected to the piston of the oilcylinder and subject to directsteam-pressure IOO IOS

IIO

in one direction only, substantially as described, whereby theequilibrium in the oil-cylinder is overcome and the oil ejected by thepreponderance of pressure exerted by the piston of the auxiliarysteam-cylinder.

2. In a lnbricator, the combination of a cylinder, A, forming anoil-chamber, 'piston B, auxiliary steam-cylinder M, having piston N,connected to piston B, steam-connections admittingsteam-pressuresimultaneously on both sides of piston B and on one side only of pistonN, and an escape for the oil, substantially as described.

3. In a lubricator, in combination with the oil-ejecting piston B, ashaft, B, rotated by the movement ot' piston B and projecting outsidethe cylinder, a gong, T, xed on the end of shaft u and rotatingtherewith, a hammer for said gong, and a rotary tripping wheel or camopcrated by said shaft, substantially as described.

4. The combination, with rotating shaft R, having gong T with aperipheral scale marked thereon, of the stationary pointer z,substantially as described.

5. The combination of piston B, having feather 0', spirally-groovedshaft R, wheels s and t,shat`t ucam spring-hammer w, and gong T,substantially as described.

6. In a lubricator, the combination of oilcylinder A, having` a port, d,and piston B, check-valve g, operating-stem Z and pipe c, auxiliarysteam-cylinder M, having piston N, connected to piston B, pipe n,communicating with port d, and arm E, communicating on one hand withpipe e and on the other with port d and pipe u, substantially asdescribed.

7. In a locomotive-lubricator, having cylinders A A' H', pistons B B G',connected substantiallyas shown, pipes c' and h', connected to thedry-pipe, and check-valves g', the coinbination therewith of the pipela, leading to thelive-steam space ofthe boiler, valve Z' therein, andcheck-valve m in pipe c', substantially as described.

In testimony that I claim the foregoing as my own I have hereto aflixedmy signature in presence of two witnesses.

ROBERT G. MCAULEY.

Witnessesz LOUIS B. FULTON, T. J. MCTIGHE.

